This article is from Sensors (Basel, Switzerland) , volume 12 . Abstract A novel and promising method to measure low levels of NOx utilizes the accumulating sensor principle. During an integration cycle, incoming NOx molecules are stored in a sensitive layer based on an automotive lean NOx trap (LNT) material that changes its electrical resistivity proportional to the amount of stored NOx, making the sensor suitable for long-term detection of low levels of NOx. In this study, the influence of...
Source: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3478842